EFFECT OF LANDFILL ON LOCAL HYDROGEOLOGICAL PROCESS

The selection of a reasonable landfill site is very important for “safe” disposal as well as sustainable development of the urban areas. Many negative impacts have been created from the landfill sites such as groundwater pollution, surface water pollution, air pollution and human health. Among of these, groundwater suffers extremely serious problems due to difficulties of prediction and treatment. The change of landuse is considered as the determinate factor to evaluate how groundwater environment is influenced. As such an example, A. landfill in B. City, Japan was selected as the case study. The authors attempted to evaluate the effects of this landfill on local hydrogeological process. The groundwater flow model was coupled with the recharge model to solve the partial differential equation of groundwater flow. The study demonstrated that the significant change of the groundwater table and spring rates between the present and past conditions was obtained.